Futures contracts of soybean fell over 1% due to adequate rains in the key growing areas of the commodity. The most-active October contract on NCDEX traded down 1.7% from previous close. Adequate rainfall on Sunday in the key growing areas of Madhya Pradesh, Maharashtra and Rajasthan is likely to benefit the soybean crop. Weakness in the soybean contract on CBOT also weighed on domestic futures.